The character models for erotic/nude photos.

Erotic photography is a style of art photography of an erotic, sexually suggestive or sexually provocative nature. Though the subjects of erotic photography are usually completely or mostly unclothed, that is not a requirement.

Erotic photographs are normally intended for commercial use, including mass-produced items such as decorative calendars, pinups and for men's magazines but sometimes the photographs are intended to be seen only by the subject's partner.

Do not confuse withpornographic photography, which is of a sexually explicit nature (preferably use traits related to porn production in that case).